EP1961694A1 - Verfahren zum Senken eines Laderauslegers - Google Patents

Verfahren zum Senken eines Laderauslegers Download PDF

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Publication number
EP1961694A1
EP1961694A1 EP08158101A EP08158101A EP1961694A1 EP 1961694 A1 EP1961694 A1 EP 1961694A1 EP 08158101 A EP08158101 A EP 08158101A EP 08158101 A EP08158101 A EP 08158101A EP 1961694 A1 EP1961694 A1 EP 1961694A1
Authority
EP
European Patent Office
Prior art keywords
loader
arm assembly
valve
chamber
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08158101A
Other languages
English (en)
French (fr)
Other versions
EP1961694B1 (de
Inventor
designation of the inventor has not yet been filed The
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JC Bamford Excavators Ltd
Original Assignee
JC Bamford Excavators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9892266&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1961694(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JC Bamford Excavators Ltd filed Critical JC Bamford Excavators Ltd
Publication of EP1961694A1 publication Critical patent/EP1961694A1/de
Application granted granted Critical
Publication of EP1961694B1 publication Critical patent/EP1961694B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Definitions

  • This invention relates to a wheeled loader having a loader arm assembly which carries a working implement and in which the loader arm assembly is connected to the body and which is movable between raised and lowered positions by means of a hydraulic ram means of a hydraulic system.
  • a ride improvement system has not been provided hitherto in a loader vehicle comprising a loader arm assembly connected at, or adjacent to, the rear end of the assembly to the body at, or adjacent to, the rear end of the body so that the loader arm assembly extends forwardly whereby, in a lowered position of the arm assembly, the working implement is disposed in front of the body,
  • a loader vehicle comprising a loader arm assembly connected at, or adjacent to, the rear end of the assembly to the body at, or adjacent to, the rear end of the body so that the loader arm assembly extends forwardly whereby, in a lowered position of the arm assembly, the working implement is disposed in front of the body,
  • a vehicle is provided with a hose burst check valve.
  • the selection valve may be manually operable.
  • the control valve may be an electrically operated solenoid valve.
  • a wheeled loader vehicle comprises a body 10 supported, in conventional manner, on two pairs of front and rear wheels 11, 12 each of which is steerable and each of which is driven by a suitable transmission and differential means from an engine which may be disposed as desired on the vehicle.
  • the body 10 has a rear end 13 and a front end 14.
  • a loader arm assembly 16, at a position adjacent its rear end, is pivotally mounted to the body 10 adjacent the rear end 13 of the body, about an axis 15.
  • the loader arm assembly 16 in the present example is a two part boom having an outer part 16 a , within which is telescoped an inner part 16b and which parts are slidable relative to each other by hydraulic ram means so as to provide an extendible loader arm assembly.
  • the vehicle may have a two or more part boom or an un-extendible single part boom.
  • a working implement 18 At the front end of the boom assembly 16 is a downwardly extending nose part 17 by which a working implement 18 is releasably carried in conventional manner.
  • the working implement 18 may be a pair of lifting tines as shown or may be a bucket or any other suitable working implement.
  • the loader arm assembly may be connected to the body at or adjacent the rear thereof, by any suitable pivot means disposed at or adjacent the rear of the loader arm assembly.
  • the loader arm assembly 16 is pivotable about the axis 15 between raised and lowered positions. In the lowered position working implement 18 is disposed in front of the vehicle front end 14.
  • the loader arm assembly 16 is movable between said raised and lowered positions by a ram assembly 20, which in the present example comprises a single ram.
  • the ram assembly 20, in conventional manner, comprises a cylinder part 21 and a piston rod 22.
  • the piston rod 22 is connected at one end to a bracket 23 depending downwardly from the underside of the part 16a of the lowered arm assembly by means of a pivot pin 24a whilst the cylinder 21 is connected, at its lower end, by a pivot pin 24b to a part of the body 10.
  • a pivot pin 24a to a part of the body 10.
  • first chamber 25 on one side of the piston 27, which is of cylindrical configuration and a second chamber 26 on the opposite side of the piston 27, see Figures 2 to 5 , to the first chamber 25 and which is of annular configuration in cross section.
  • a conventional accumulator means 30 made of, in the present example, steel and connected by a pipe 31 to a first control valve 32.
  • a second control valve 33 is connected by a line 34 comprising flexible hoses and/or rigid pipes to an hydraulic reservoir or other low pressure area 35.
  • Each control valve 32, 33 is an electrically operated solenoid valve and which is movable between a first or “at rest” position in which passage of fluid is prevented in one direction of the valve 32 and in both directions in the valve 33 and a second position in which passage of fluid is permitted. Both control values 32, 33 are normally spring biased by a spring means 36 to the position in which flow of fluid is prevented as illustrated in Figure 2 and Figure 3 .
  • a line 38 comprising a rigid pipe 38a and a flexible line 38b, connects the first chamber 25 of the ram 20 to a first port 40a of a selection valve 40 via a hose burst check valve 39.
  • the first control valve 32 is connected by a line 37, comprising a rigid pipe, to the line 38 between ram chamber 25 and the hose burst check valve 39,
  • the hose burst check valve 39 is a pilot valve that is normally maintained closed in the direction to prevent flow of fluid under pressure from the chamber 25 to the valve 40 but it may be opened by supply of pilot pressure on line 41, comprising a rigid pipe, from a line 42, comprising a rigid pipe 42a and flexible hoses 42 b which extends between a second port 40 b of the selection valve 40 and the chamber 26 of the ram 20.
  • the line 42 is connected by a line 43 to the second control valve 33.
  • valves 32 and 33 In use, as best shown in Figure 2 , during normal operation, when it is desired to lift the arm, fluid under pressure is fed from the first port 40a of the selection valve 40 along the line 38 through the one-way check valve within the hose burst check valve 39. As boom suspension has not been selected there is no electrical supply to valves 32 and 33 and they remain in the normally closed position. As the telescopic boom 16 is raised, by the supply of fluid to the chamber 25, fluid under lower pressure is fed from the chamber 26 along line 42 into a port 40b of the selection valve 40. The valve 33, of course, being, like the valve 32, maintained in the position shown in Figure 2 to prevent flow of fluid therethrough by virtue of no electrical supply being supplied to the solenoid thereof.
  • valve 40 when it is desired to lower the loader arm assembly the valve 40 is actuated to feed fluid under pressure through port 40b along line 42 into the chamber 26 and thus fluid under lower pressure is fed from chamber 25 along line 38 through hose burst check valve 39 which is maintained in an open position by virtue of supply of pilot pressure on line 41 which extends from line 42.
  • valve 40 when it is desired to raise the loader arm assembly whilst the ride improvement means is engaged, the valve 40 is actuated to feed fluid from port 40 a under pressure along line 38 into the chamber 25 whilst fluid from the chamber 26 passes along the line 42 back to the valve 40. At the same time the suspension of the arm assembly is suspended by the accumulator 30 as described hereinbefore in connection with the Figure 4 .
  • valve 40 when it is desired to lower the boom whilst the ride improvement means is engaged, the actuation of the valve 40 to raise pressure at port 40 b , by virtue of switch 44, has the effect of collapsing the electrical signal to valve 33 which becomes closed and so allows pressure to be raised in line 42 which feeds fluid under pressure to chamber 26, whilst fluid in chamber 25 is fed via line 38 through the hose burst check valve 39 to the port 40 a of the valve 40.
  • the hose burst check valve 39 is maintained open by pilot pressure fluid on line 41 which extends from line 42.
  • valves 32, 33 and check valve 39 are all disposed on the cylinder 21, if desired one or more of these components may be positioned as desired and made of material as desired where permitted by local regulations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Vehicle Body Suspensions (AREA)
EP08158101A 2000-05-25 2001-05-24 Radlader mit einer Laderarmanordnung. Revoked EP1961694B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0012602A GB2365407B (en) 2000-05-25 2000-05-25 Hydraulic system for wheeled loader
EP20010304608 EP1157963B1 (de) 2000-05-25 2001-05-24 Hydraulisches System für einen Radlader
EP04004513A EP1428789B1 (de) 2000-05-25 2001-05-24 Verfahren zum Betreiben eines hydraulischen Systems für einen Radlader
EP05000406A EP1522520B1 (de) 2000-05-25 2001-05-24 Verfahren zum Senken eines Laderauslegers

Related Parent Applications (4)

Application Number Title Priority Date Filing Date
EP01304608.1 Division 2001-05-24
EP05000406A Division EP1522520B1 (de) 2000-05-25 2001-05-24 Verfahren zum Senken eines Laderauslegers
EP04004513.0 Division 2004-02-27
EP05000406.8 Division 2005-01-11

Publications (2)

Publication Number Publication Date
EP1961694A1 true EP1961694A1 (de) 2008-08-27
EP1961694B1 EP1961694B1 (de) 2011-03-16

Family

ID=9892266

Family Applications (4)

Application Number Title Priority Date Filing Date
EP20010304608 Revoked EP1157963B1 (de) 2000-05-25 2001-05-24 Hydraulisches System für einen Radlader
EP08158101A Revoked EP1961694B1 (de) 2000-05-25 2001-05-24 Radlader mit einer Laderarmanordnung.
EP04004513A Revoked EP1428789B1 (de) 2000-05-25 2001-05-24 Verfahren zum Betreiben eines hydraulischen Systems für einen Radlader
EP05000406A Revoked EP1522520B1 (de) 2000-05-25 2001-05-24 Verfahren zum Senken eines Laderauslegers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20010304608 Revoked EP1157963B1 (de) 2000-05-25 2001-05-24 Hydraulisches System für einen Radlader

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP04004513A Revoked EP1428789B1 (de) 2000-05-25 2001-05-24 Verfahren zum Betreiben eines hydraulischen Systems für einen Radlader
EP05000406A Revoked EP1522520B1 (de) 2000-05-25 2001-05-24 Verfahren zum Senken eines Laderauslegers

Country Status (8)

Country Link
US (1) US7089734B2 (de)
EP (4) EP1157963B1 (de)
AT (4) ATE294133T1 (de)
DE (4) DE60106671T9 (de)
DK (2) DK1428789T3 (de)
ES (3) ES2240952T3 (de)
GB (1) GB2365407B (de)
PT (2) PT1157963E (de)

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US7204086B2 (en) * 2000-05-25 2007-04-17 J.C Bamford Excavators Limited Method of operating a hydraulic system for a loader machine
DE10227966A1 (de) 2002-06-22 2004-01-08 Deere & Company, Moline Hydraulische Steueranordnung für eine mobile Arbeitsmaschine
US7383906B2 (en) 2002-08-29 2008-06-10 Jlg Industries, Inc. Rotatable and telescopic work machine
KR100953809B1 (ko) * 2002-12-27 2010-04-21 두산인프라코어 주식회사 휠로더의 붐완충장치
DE10305790A1 (de) * 2003-02-07 2004-08-26 Hydac System Gmbh Federungsvorrichtung
DE10336684A1 (de) * 2003-08-09 2005-03-03 Deere & Company, Moline Hydraulische Steueranordnung für eine mobile Arbeitsmaschine
DE102004010053A1 (de) * 2004-03-02 2005-09-29 Hydac System Gmbh Federungsvorrichtung
DE102004012362A1 (de) * 2004-03-13 2005-09-22 Deere & Company, Moline Hydraulische Anordnung
US7377523B2 (en) * 2004-05-17 2008-05-27 Husco International, Inc. Hydraulic suspension with a lock-out mechanism for an off-highway vehicle
DE102004032868A1 (de) * 2004-07-07 2006-02-09 Liebherr-Hydraulikbagger Gmbh Bagger und Maschine zum Materialumschlag
GB2418903B (en) * 2004-10-08 2008-06-25 Caterpillar Inc Ride control circuit for a work machine
DE602004011077T2 (de) * 2004-11-12 2009-01-02 Parker Hannifin Ab Niveauregulierung
DE102004056418B4 (de) 2004-11-23 2013-02-28 Deere & Company Hydraulische Anordnung
FR2881126B1 (fr) * 2005-01-21 2007-03-30 Hydrokit Soc Par Actions Simpl Engin roulant du type muni d'un bras, comportant un dispositif d'amortissement du bras.
EP1733996B1 (de) * 2005-06-15 2009-03-11 Bosch Rexroth Oil Control S.p.A. Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms
DE102005033154A1 (de) 2005-07-13 2007-01-18 Deere & Company, Moline Hydraulische Anordnung
DE102005038333A1 (de) 2005-08-11 2007-02-15 Deere & Company, Moline Hydraulische Anordnung
ITTO20050629A1 (it) * 2005-09-15 2007-03-16 Cnh Italia Spa Disposizione idraulica per un braccio di sollevamento incernierato ad un veicolo
US20080093093A1 (en) * 2006-10-24 2008-04-24 Morris Industries Ltd Combination Hydraulic Hold-Down and Lift System for an Agricultural Implement
EP1964756B1 (de) * 2007-01-24 2009-04-29 Klemm Bohrtechnik GmbH Pendelfahrwerk, insbesondere für ein Bohrgerät
GB2451244B (en) * 2007-07-21 2011-09-28 Bamford Excavators Ltd Working machine
FR2923352B1 (fr) * 2007-11-12 2010-01-15 Signalisation Moderne Autoroutiere Sma Machine de fauchage/debroussaillage/elagage munie d'un moyen d'amortissement de chocs
US7827787B2 (en) 2007-12-27 2010-11-09 Deere & Company Hydraulic system
US9055719B2 (en) * 2012-12-06 2015-06-16 Deere & Company Method and apparatus for ride control activation
US10030676B2 (en) * 2014-04-23 2018-07-24 Hyster—Yale Group, Inc. Hydraulic fluid supply apparatus and methods
US20170175780A1 (en) * 2014-05-14 2017-06-22 Moisés Castro Salinas Safety Valve For The Hydraulic Hopper Lifting System Of Compactor Trucks
JP6532427B2 (ja) * 2016-04-26 2019-06-19 株式会社クボタ 作業車
CN109573895A (zh) * 2018-12-29 2019-04-05 航天重型工程装备有限公司 一种蓄电池铲运装置

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Publication number Priority date Publication date Assignee Title
JPS58121305A (ja) * 1982-01-11 1983-07-19 Kobe Steel Ltd 油圧シリンダの伸縮保持用油圧回路
US4658970A (en) * 1985-11-15 1987-04-21 Kobe Steel Ltd. Deflection reduction module for boom hoist cylinder of mobile crane
JPS63265023A (ja) * 1987-04-20 1988-11-01 Kobe Steel Ltd 車両系建設機械の振動抑制装置
EP0482248A1 (de) * 1989-04-21 1992-04-29 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Vorrichtung zur Unterdrückung von zitternden Bewegungen bei beweglichen Kränen
US5195864A (en) * 1991-08-28 1993-03-23 Case Corporation Hydraulic system for a wheel loader
US5513491A (en) * 1991-09-04 1996-05-07 O&K Orenstein & Koppel Ag Hydraulic vibration damping system for machines provided with tools
JPH05163745A (ja) * 1991-12-13 1993-06-29 Komatsu Ltd 昇降作業機の位置エネルギ回収装置
JPH0978633A (ja) * 1995-09-13 1997-03-25 Komatsu Ltd 車輪式建設機械の走行振動抑制油圧回路
DE19913784A1 (de) * 1999-03-26 2000-09-28 Mannesmann Rexroth Ag Lastfühlende hydraulische Steueranordnung für eine mobile Arbeitsmaschine

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Title
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PATENT ABSTRACTS OF JAPAN vol. 013, no. 060 (M - 796) 10 February 1989 (1989-02-10) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 569 (M - 1496) 15 October 1993 (1993-10-15) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) *

Also Published As

Publication number Publication date
EP1522520B1 (de) 2008-06-25
EP1522520A3 (de) 2005-04-20
EP1428789A3 (de) 2004-06-30
PT1157963E (pt) 2005-03-31
ES2362809T3 (es) 2011-07-13
ATE399142T1 (de) 2008-07-15
ES2240952T3 (es) 2005-10-16
ATE294133T1 (de) 2005-05-15
DE60106671D1 (de) 2004-12-02
GB0012602D0 (en) 2000-07-12
EP1157963A3 (de) 2002-04-17
GB2365407A (en) 2002-02-20
ES2228758T3 (es) 2005-04-16
DE60144256D1 (de) 2011-04-28
ATE501974T1 (de) 2011-04-15
EP1428789B1 (de) 2005-04-27
US7089734B2 (en) 2006-08-15
DK1157963T3 (da) 2005-02-14
EP1428789A2 (de) 2004-06-16
EP1157963A2 (de) 2001-11-28
EP1961694B1 (de) 2011-03-16
GB2365407B (en) 2003-10-08
PT1428789E (pt) 2005-06-30
DE60106671T2 (de) 2005-04-07
DE60134583D1 (de) 2008-08-07
DE60110472T2 (de) 2005-09-29
US20020001516A1 (en) 2002-01-03
DE60110472D1 (de) 2005-06-02
EP1522520A2 (de) 2005-04-13
DK1428789T3 (da) 2005-09-19
DE60106671T9 (de) 2005-09-15
ATE280733T1 (de) 2004-11-15
EP1157963B1 (de) 2004-10-27

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